Home / 3,578.05-4,937.76-2,161.54

Finding the Fourth Proportional to 3,578.05, 4,937.76 and 2,161.54

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Solution

The fourth proportional to 3,578.05, 4,937.76 and 2,161.54 is: 2,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.05 : 4,937.76 = 2,161.54 : x
  2. Step 2: Convert to fraction form
    3,578.05/4,937.76 = 2,161.54/x
  3. Step 3: Cross multiply
    3,578.05x = 4,937.76 × 2,161.54
  4. Step 4: Simplify right side
    3,578.05x = 10,673,130.25
  5. Step 5: Solve for x
    x = 10,673,130.25/3,578.05
  6. Step 6: Final answer
    x = 2,982.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.